641415 has 16 divisors (see below), whose sum is σ = 1044576. Its totient is φ = 336000.

The previous prime is 641413. The next prime is 641419. The reversal of 641415 is 514146.

641415 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 641415 - 2¹ = 641413 is a prime.

It is a super-2 number, since 2×641415² = 822826404450, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 641391 and 641400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 565 + ... + 1265.

It is an arithmetic number, because the mean of its divisors is an integer number (65286).

2⁶⁴¹⁴¹⁵ is an apocalyptic number.

641415 is a deficient number, since it is larger than the sum of its proper divisors (403161).

641415 is a wasteful number, since it uses less digits than its factorization.

641415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770.

The product of its digits is 480, while the sum is 21.

The square root of 641415 is about 800.8838867152. The cubic root of 641415 is about 86.2408517917.

It can be divided in two parts, 64141 and 5, that added together give a palindrome (64146).

The spelling of 641415 in words is "six hundred forty-one thousand, four hundred fifteen".